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Sign Out Sheet Statistics

Sign Out Sheet Statistics. Tim Kariger , Paolo Ramirez, Taylor Young. Description of Topic. Determine if sign outs are associated with: Gender Class Subject Class Block 1/3 of Block. Procedure. Gather complete sign out sheets from Mr. Rohrmiller

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Sign Out Sheet Statistics

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  1. Sign Out Sheet Statistics Tim Kariger, Paolo Ramirez, Taylor Young

  2. Description of Topic • Determine if sign outs are associated with: • Gender • Class Subject • Class Block • 1/3 of Block

  3. Procedure • Gather complete sign out sheets from Mr. Rohrmiller • Mrs. McNelis & Mr. Rohrmiller determine gender, and remove name • Recorded Gender, Subject, Time Out, Block and 1/3 of Block

  4. Gender proportions • Of the 1481 subjects, 61.44% were female 38.56% were male

  5. Block frequency • 3rd is most frequent, but only by 4 Block 1: 280 (18.9%) Block 2: 349 (23.57%) Block 3: 428 (28.9%) Block 4: 424 (28.63%)

  6. Gender Frequency/Block English Female: unimodal, right skewed Male: bimodal, roughly symmetric Social Studies Female: Unimodal, roughly symmetric Male Unimodal, left skewed

  7. Conclusion about pop. • More females than males used the bathroom • Students use the bathroom more frequently in the later half of the day (3rd & 4th)

  8. Study hall Chi squared test (block vs 3rd) Check: -3rd of block and block number are categories -sign out pages were randomly selected -All counts greater than 5 State: -Categorical data -SRS -All expected counts greater then 5 Conditions met, chi squared distribution, Chi squared test for independence. DF=6 P(x>41.99)= .0001

  9. Study hall Chi squared test (block vs 3rd) cont. • Ho: There is no association between 3rd of block and block given that it’s study hall. • Ha: There is an association between 3rd of block and block given that it’s study hall • We reject the Ho because the p-value of .0001 is less than =.05 • We have sufficient evidence that there is an association between 3rd of block, and block when in study hall

  10. Independence test (block and subject) State: -categorical data -SRS -all expected counts are greater than 5 Check: -Block number and subject are categories -Data randomly collected -All expected cell counts are more than 5 Condition met, chi distribution, Chi squared test for independence P(x>381.2)= .0001 DF=15

  11. Conclusion of block and subject test • Ho: there is no association between subject and block • Ha: there is an association between subject and block • We reject the Ho because the p-value of .0001 is less than alpha=.05 • We have sufficient evidence that there in an association between block and subject

  12. Gender and subject chi squared test Check: -Gender and subject are categories -Data collected randomly -All counts greater than 5 State: -Categorical data -SRS -All expected counts greater than 5 Conditions met, chi squared model Chi squared test for independence Ho: there is no association between gender and subject Ha: there is an association between gender and subject P(x>50)= .0001 DF=5

  13. Gender and subject chi squared test Ho: there is no association between gender and sign out subject Ha: there is an association between gender and sign out subject • We reject the Ho because the p-value of .0001 is less than alpha=.05 • We have sufficient evidence that there is an association between gender and what subject you sign out.

  14. Conclusion • Block of the day helps determine what subject • When in study hall, which 3rd of the block you sign out in has to do with what block of the day you’re in • Which gender you are affects what subject you sign out in.

  15. Bias and errors • Gender was based off name and handwriting • Gender could have been wrongly called • Several names could be either male or female • Monotonous data could have been input wrongly • Teachers have different lunches, sign-outs during lunch could not be counted • Teachers have different plan periods during which they have no students to sign-out

  16. Bias and errors (cont.) • Not all sign-outs were to the bathroom, and we can’t guarantee that all students actually went to the destination they signed • We assume that student accurately signed out at the time specified. • Cannot guarantee that every teacher turns their sheets in

  17. Special Thank You… Santa Claus Osama & ME signing out at THIS time , going to HERE coming back NOW Jesus

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